# SDR DXTA2026061008381

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 8, 2026
- Submitted: June 10, 2026
- Operation: Air carrier
- Aircraft: [N529QS](https://openairdocs.org/aircraft/N529QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0309
- Aircraft time: 5,065 hours, 3,284 cycles
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Monitoring Unit
- Part number: 74971011
- Part serial: 0506
- Condition: Defective
- Location: Zone 200
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026061008381

## Discrepancy

AFTER DEPARTING KDAL AND CLIMBING THROUGH APPROXIMATELY 4,000 FEET WE RECEIVED TWO CAS MESSAGES. AMBER CHECK DOORS AND THE CABIN DOOR OPEN CAS MESSAGES. WE RETURNED TO KDAL AND UPON INSPECTING THE CABIN DOOR ALL SIX PINS WERE SHOWING LATCHED AND SECURED. HOWEVER, THE AMBER DOOR OPEN LIGHT IS SHOWING ON.   REMOVED OLD CED MONITOR PCB (P/N: 7497101-1, S/N:0506), INSTALLED NEW CED MONITOR PCB (P/N: 7468101-20, S/N 35148201-1) OPS CHECK GOOD. WORK PERFORMED IN REF TO CE-680A AMM 52-70-00

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